This tutorial presents a systematic review of polarization as manifested online, and in particular on social media. In the first part, we clarify the concept of polarization and the related nomenclature, drawing from the social and political sciences. Subsequently, we review algorithmic techniques for detection, quantification, and mitigation of polarization. We conclude the tutorial by presenting open challenges and promising research directions for Web Scientists.
By Kiran Garimella, Gianmarco De Francisci Morales, Aristides Gionis, Michael Mathioudakis.